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Data migration method and system

A technology of data and migration management, applied in the transmission system, electrical components, etc., can solve the problems of data inconsistency, data omission, and affecting the normal operation of the distributed cache system, so as to improve the speed and ensure the normal function

Active Publication Date: 2015-07-22
北京云众林网络技术有限公司
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Problems solved by technology

[0008] The method in the above scheme 1 needs to stop the normal operation of the distributed cache system, which affects the normal operation of the distributed cache system; the method in scheme 2 reads the data through the traversal method, which will lead to slow data migration, and, When the distributed cache system works normally, newly generated data may be missed, resulting in inconsistency between the migrated data node and the migrated data node

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Embodiment Construction

[0029] The basic idea of ​​the present invention is: according to user selection notification data move out of the node for data migration, the data move out node sends the data and redo (Redo) log to the data move in node, the data move in node receives and saves the migration data, according to the redo log pair The received migration data is checked and updated.

[0030] Hereinafter, the present invention will be described in detail through specific embodiments and drawings.

[0031] A method of data migration, such as figure 1 As shown, the specific steps are as follows:

[0032] Step 101: When the system is overloaded or unevenly loaded, according to the user's choice, notify the data to move out of the node for data migration;

[0033] When users find that the system load is too heavy or uneven, they need to start data migration. Through the management and control platform, select the node that needs to migrate data, that is, the data move out node; and the node that receives th...

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Abstract

A data transfer method is disclosed in the present invention, and the method includes: according to the user selection, a data transfer-out node is notified to perform data transfer; the data transfer-out node sends the transferred data and a redoing log to a data transfer-in node; the data transfer-in node receives the transferred data and stores it, receives the redoing log and performs verification and update for the received transferred data according to the redoing log. A data transfer system is also disclosed in the present invention. The method and system in the present invention can improve the data transfer speed and ensure the data consistency in the transfer process, while also ensuring the normal operation of the system.

Description

Technical field [0001] The invention relates to the field of data distributed caching, in particular to a method and system for data migration. Background technique [0002] Cloud computing is a product of grid computing, distributed computing, parallel computing, utility computing, network storage, virtualization, load balancing and other traditional computer technology and network technology development integration; it aims to combine multiple relatively low-cost The computing entity is integrated into a system with powerful computing capabilities. Distributed cache is a field in the cloud computing category, and its role is to provide distributed storage services for massive amounts of data in cloud computing and high-speed read and write access capabilities. [0003] A distributed cache system that provides a distributed cache function is composed of several server nodes, hereinafter referred to as nodes, and clients connected to each other. Generally speaking, in order to en...

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Application Information

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IPC IPC(8): H04L29/08H04L29/12
CPCH04L67/1095
Inventor 陈典强郭斌韩银俊
Owner 北京云众林网络技术有限公司